Moderate-resolution (150-300 km s$^{-1}$) spectra covering the
H$\beta$ + [O III] $\lambda$5007 spectral region were obtained for
41 radio-loud quasars (z $\leq$ 0.9) in order to investigate relationships
between their broad and narrow line profiles, radio structures, and X-ray
properties. The spectra of radio-loud PG quasars observed by Boroson \& Green
(1992) and high-resolution spectra of Jackson \& Browne (1991) have been
added to form a sample of 60 radio-loud objects with similar numbers of core-
and lobe-dominated quasars.

Principal component analyses have been performed. Three main effects are
present:
\begin{enumerate}
\item{A number of H$\beta$ profile parameters are correlated with the core
dominance, a measure of orientation in the relativistic beaming model. A
very broad (9000 km/s),
redshifted component is strong in lobe-dominant sources (edge-on)
and weak in core-dominant sources (face-on).}
\item{The second most significant source of variation in the H$\beta$ profile
involves the variation of an intermediate width (2000 km/s) component with
a small redshift. The strength of this component is correlated with the
strength of [O III] $\lambda$5007.}
\item{The third effect depends on optical luminosity. As luminosity increases,
$\alpha_{ox}$ increases, [O III] $\lambda$5007 line width increases, and
EW(H$\beta$) and EW([O III]) decrease (a Baldwin effect).}
\end{enumerate}

Contrary to some published results, two significant $non$-correlations are
noted: between FWHM$_{H\beta}$ and FWHM$_{5007}$, and between the asymmetry of
[O III] $\lambda$5007 and the core dominance.